This compact diagnostic module is designed to simulate a slow-varying analog signal similar to what an oxygen (O₂) sensor outputs in automotive systems. It’s ideal for testing how an Engine Control Module (ECM) responds to sensor input and for evaluating the behavior of related components, including the catalytic converter and sensor wiring.

Whether you're developing custom firmware, verifying ECU responses, or diagnosing inconsistencies in sensor readings, this tool offers a safe and reliable way to test systems without requiring a live exhaust signal.

Designed for bench-top diagnostics and educational use

Simple 3-wire hookup: 12V in, ground, and signal out

ECM behavior observation

O₂ sensor circuit testing (signal-only)

Simulated input for catalytic converter monitoring systems

This product is intended strictly for controlled diagnostic testing and educational use. It is not intended to replace emissions equipment or to be used on public roads. Always comply with local regulations and use responsibly.